State Industries 705 Series 200, U287-084 Flue Terminal Clearances ANS Z21.10.3 CSA

Flue Terminal Clearances (ANS Z21.10.3 ● CSA 4.3)

D

E

B

L

INSIDE

CORNER DETAIL

G

H

A

		I	M
		B
	B	FIXED	K
		CLOSED
	OPERABLE
C	B	J
FIXED	B	X AIR SUPPLY INLET
CLOSED
	A
OPERABLE

V VENT TERMINAL

F

AREA WHERE

B TERMINAL IS NOT PERMITTTED

Ref	Description	US Installations
A	Clearance above grade, veranda, porch, deck, or balcony	12 inches (30 cm)
B	Clearance to window or door that may be opened	12 inches (30 cm)
C	Clearance to permanently closed window	*
	Vertical clearance to ventilated soffit, located above the terminal
D	within a horizontal distance of 2 feet (61 cm) from the center line	*
	of the terminal
E	Clearance to unventilated soffit	*
F	Clearance to outside corner	*
G	Clearance to inside corner	*
H	Clearance to each side of center line extended above meter/	*
	regulator assembly
I	Clearance to service regulator vent outlet	*
J	Clearance to nonmechanical air supply inlet to building or the	12 inches (30 cm)
	combustion air inlet to any other appliance
K	Clearance to a mechanical air supply inlet	3 feet (91 cm) above if within
		10 feet (3 m) horizontally
L	Clearance above paved sidewalk or paved driveway located on	*
	public property
M	Clearance under veranda, porch, deck, or balcony	*

1A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.

2Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

∗For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local installation codes and the requirements of the gas supplier.

305, 505, 705 Indoor Manual 25